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Transmission and drivetrainPart report

2006 GMC Yukon Denali XL Transmission and drivetrain Problems

Complaints
1about this part
Share
9%of 11 total for the year
Median mileage
—not reported
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 1 complaints about the transmission and drivetrain of the 2006 GMC Yukon Denali XL, 9% of the 11 complaints for this model year.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The contact owns a 2006 Gmc Yukon Denali Xl. The contact stated that while driving approximately 30 MPH, the brake pedal traveled to the floorboard abnormally upon engaging. The vehicle failed to decelerate until after the gear lever was shifted into neutral. The contact also noticed brake fluid leaking on the ground. The vehicle was towed to an authorized dealer where the driver's side brake line was replaced. In addition, the transmission oil line was previously replaced. The manufacturer was not notified of the defect. The approximate failure mileage was 54,000.”

NHTSA complaint #10554354, filed 2013-12

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
2016310%
2015914%
201214%
200915%
200825%
200712%
200619%
2005412%
200424%
200326%

Other parts of the 2006 GMC Yukon Denali XL

Brakes
5 complaints
Electronic stability control
3 complaints
Engine
2 complaints
Engine cooling
1 complaints
Fuel system
1 complaints
Other or unknown
1 complaints
Body and structure
1 complaints
Vehicle speed control
1 complaints

← All problems reported for the 2006 GMC Yukon Denali XL

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology